| 穆学涛,李坤成,苏壮志.MR结肠成像临床应用的初步探讨[J].中国医学影像技术,2005,21(8):1245~1248 |
| MR结肠成像临床应用的初步探讨 |
| Clinical applications of MR colonography: a preliminary study |
| 投稿时间：2005-04-06 修订日期：2005-06-10 |
| DOI： |
| 中文关键词: 磁共振成像 内窥镜检查 计算机辅助诊断 |
| 英文关键词:Magnetic resonance imaging Endoscopy Computer-assisted diagnosis |
| 基金项目: |
|
| 摘要点击次数: 2222 |
| 全文下载次数: 1054 |
| 中文摘要: |
| 目的 探讨MR结肠成像(MR colonography,MRC)技术的方法及初步临床应用价值。方法 对23例患者(4例结肠息肉,1例结肠腺瘤,3例溃疡型结肠炎,15例结肠癌)和8例健康志愿者行MR结肠成像。肠道准备后,经肛管注入结肠1∶100的钆喷酸葡胺水溶液约1300~1800 ml。被检查者取俯卧位和仰卧位进行扫描,将3D-FLASH数据传输到工作站进行仿真内镜 (MRVE)、半透明显示(MR-VRSV)、多平面重建(MPR)等后处理。结果 MRC能清楚显示结肠正常结构、结肠癌和大于10 mm的息肉,对小于5 mm病变的检出及定性困难。MRC显示上述病变的部位、大小及形态等与光学纤维结肠镜和X线气-钡结肠双重造影所见基本相仿。结论 MRC可作为光学纤维结肠镜和X线气-钡双重造影检查结肠的补充方法。 |
| 英文摘要: |
| Objective To explore the imaging Methods of MR colonography (MRC) and its values in clinical applications. Methods MRC was performed on 8 healthy volunteers and 23 patients with carcinoma of colon (15), polyp of colon (4), ulcerative colonitis (3) and adenoma of colon (1). The procedure was as follows: bowel preparation was performed on all subjects firstly, 1300-1800 ml enema (2000 ml of water combined with 20 ml Gd-DTPA) given through the analis into the rectum. Following scans were performed on the subjects with prone and supine positions. ① True fast imaging with steady-state precession (True-FISP) sequence. ② Three-dimensional fast low-angle shot (3D-FLASH) sequence. ③ If the colon lesions were depicted, the 2D-FLASH /True-FISP sequence was added. The 3D-FLASH data were transferred to the diagnostic workstation, then MRVE, MR-VRSV and MPR images were acquired. Results The normal colorectal walls, lesions larger than 10 mm of carcinoma and polyp of colon were well demonstrated, however, the detection and characterization of lesions less than 5 mm was difficult. The appearances of the normal inner wall, the location, size and morphology of lesions on MRC of the colon were similar to those of X-ray double contrast radiography and fiber-optic endoscopy. Conclusion MRC could be the compensation method of fiberoptic endoscopy and X-ray double contrast radiography in colon examination. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
